শুক্রবার, ২৬ আগস্ট, ২০১১

BGP Path Selection Process

The table below lists the complete path selection process of BGP:

1. Weight (Bigger is better)
2. Local preference
(Bigger is better)
3. Self originated (Locally injected is better than iBGP/eBGP learned)
4. AS-Path (Smaller is better)
5. Origin
(Prefer ORIGIN code I over E, and E over ?)
6. MED (Smaller is better)
7. External (Prefer eBGP over iBGP)
8. IGP cost (Smaller is better)
9. EBGP Peering (Older is better)
10. RID (Lower is better)